Apparently the U.S. Dollar Index (DXY) has been around for ages since 1973, as this site points out. Also, I'm able to find it on Market Watch, albeit with only a 5 year graphing option.
I'm trying to find a longer charting place where I can also compare it to the S&P500 index. (If you compare it against the S&P500 over 5 years I think the graph is very interesting, i.e. the Beta appears to be almost minus one, i.e. inversely correlated to the market).
Also, secondly, as I use the stock list / charting capabilities of Google Finance, do you know of what index to use there? If you have a better charting / stock list site, please let me know, I'm not stuck on Google Finance, just want to see major indexes and stocks in one place.
Thanks.